Sash frames with two or more window panes



Dec. 6, 1955 E. s. PERSSON SASH FRAMES WITH TWO OR MORE wmnow PANEIS Filed May 20, 1952 INVENTOR Eric Slgfrlcl Fe #56 on ATTORNEYJ Unite Stats atent 2,725,606 Patented Dec. 6, 1955 ilC SASH FRAMES WITH TWO OR MORE WINDOW PANES manufactured on a factory scale with the screening means incorporated therein. In order to make the manufacture on a factory scale economical, it is necessary to achieve great simplicity in the construction, so that the manufac- I turing methods may become simple and rational.

The present invention involves a step in the endeavours to provide a modern window of great constructive simplicity. The invention relates to a sash frame, generally with two window panes in the same frame. stantial distinguishing feature of the invention resides, above all, in that the frame comprises a frame member extending along one whole side and along the whole or a substantial portion of two further sides of the window while forming round corners in the transitions between said sides, in which frame member the window panes are tightly mounted at three of their edges, whereas a straight frame member extends along the fourth side of the window, said latter frame member being removably connected to the firstmentioned frame member and forming a holder for or a head of a Venetian blind or other screening means.

The invention provides a window which, disregarding the window panes, only consists of two main portions, that is to say, the bent frame member and the screening means. The straight frame member may be regarded as belonging to the screening means, inasmuch as it may form the head of the latter, that is to say, is made to carry the screening part or parts and comprises members" for the pulling of the screening means across and back as well as members for other control of the same. If the bent frame member like the straight frame member consists of a sectioned metal bar, the same section may be brought into use in both cases.

The mechanical equipment required for the manufacture of a window of this description will be very simple, particularly so as only the form of a single metal section calls for consideration. Soldered and welded jointsmay. be avoided, inasmuch as two corners of the sash frame are producedby round-bending of a straight metal'section at two points, while the two remaining corners, which are right-angled, are formed between the shanks of the bent frame members and the ends of the straight frame member, which are removably secured to said shanks. Contributive to the simplicity of the structure is also the circumstance that the straight frame member forms a bordering for the window panes, namely at an edge of the latter, while also constituting a holder or head of the Venetian blind or other screening means made use of, that is to say, answers two principal objects at the same time.

By the fact that two glass panes are mounted in the same frame, it is possible to achieve good outward sealing of the intermediate space between the panes, so that this space may remain relatively free from dust. Hereby The subcleaning of the sides of the window panes facing said intermediate space will be unnecessary or may be brought down to a minimum. By the possibility of loosening the straight frame member the advantage is also obtained that these surfaces are also made accessible to cleaning should this prove necessary some time or other.

The screening means may be arranged as desired between the window panes or inside the inner one of the panes. If the screening means is arranged between the panes, the operation of the same will still be simple, inasmuch as the requisite operating members are provided on the straight frame member, which forms a holdervfor or a head of the screening means. In spite of the fact that the screening means is arranged between the window,

panes, it is accessible for repair and other supervisionthrough the removable arrangement of the straight frame member.

In countries with a colder climate, it might be found necessary to prevent the passage of cold from theoutside of the window to the inside thereof, as otherwise steam might condense on the inside of the sash frame to the detriment of the building. A preventive may be attained by dividing the frame into an outer part frame and an inner part frame, which are separated by an insula'ting packing. Such an insulation of the inside of the framefrom the outside thereof need not increase the manufacturing cost to any appreciable extent, particu-' larly if the joining of the outer part frame with the inner one is carried out by mechanical means in connection with the working procedure during which the corners of the bent frame members are being shaped.

Sealing against a surrounding frame or against the borders of the opening in the wall of the building wherein the window is inserted may be achieved in a simple manner in connection with the invention by the frame member consisting of metal sections being provided with flanges projecting outwardly from the webs of the metal panying drawing. Fig. 1 shows a front view of the sash-,

frame in its mounted state, andFig. 2 is a similar view with the straight frame member removed and raised.

Fig. ,3 shows the frame in the same manner as Fig. 1

but with the screening means in screeningposition. Figs. 4, 5 and 6 each show a form of embodiment of the sashframe in cross section.

As shown in the drawing, the sash-frame consists, first, of a frame member 10 extending along a whole side, the lower side according to the drawing, and two whole further sides (the vertical sides) of the window, the transitions betweensaid sides forming round corners 12, and, 1

second, of a straight frame member 14 extending along the fourth side, here the upper, side of the window. As

shown in Fig. 2, the straight frame member 14 isvremovably connected to thebent frame member-10 so as to. permit vofbeing raised from the latter. Twoglass panes ,2

16,18 are tightly mounted at three edges into the bent frame member. The straight frame member having the fourth edge of the glass panes framed into the same forms a holder for or a head of a Venetian blind or other screening means 20, which is shown in Fig. 3 in its pulledacross position. The Venetian blind may be conceived of as being arranged on the straight frame member so as to be located between the panes or inside the inner pane.

The frame members 10, 14 consist of metal sections, which are provided with channels 22, 24 having the window panes 1'6, 18 inserted into the same with a tight fit. Theintermediate space 26. between the panes will thus be tightly closed and relatively free from dust, whereby the need for cleaning is appreciably diminished. Should cleaning he required some time or' other, it can nevertheless be performed ina relatively simple manner by" loosening and raising the removable straight frame-mam berg which may be secured to the shanks of the frame member 1! by' means of screws. The Venetian blind" will accompany the straight frame member; and is'thus" alsoreadily accessible for supervision, exchange or repair;

The frame is provided' witl't a projecting flange forming an abutment against aframe ora wall surface-about the-opening having' the sash-frame mounted therein. The flange may be located differently, depending onwhether a movable orrigidly arranged? window is in consideration, and in the-first case depending on whether thewindow ismounted on horizontal pivot axes or is laterally suspended. Thefiangeextends' i'na plane parallellingthe plane of the window panes. Fig. 4 shows a flange 26' on theframe member 10 nearthe outside thereof. If this frame is'pivotally suspended about a horizontal axis approximately at the middle of the window, the flange 26- extends upwardly along thevertical sides approximately tothe pivot axis and corresponds" to a similar flange or abutting adge on the frame above the pivot axis. In connection with a laterally suspended window, aflange ZS-maybe provided'round' the frame, as shown in Fig. 5.

In the embodiment shown in- Fig; 6, the frame is dividedinto an outer partframe 10a and aninner part frame 1012, which are cold-insulated from each other by a packing 3'0 in a channel in the-one part frame, an edge on the other part' frameprojecting into said channel. Here, the part frame 10b is shownwith a flange 32* having a packing 34 folded over the same, said packing having-forits: object-to afford-sealing between the frame and the surrounding frame or' wall' surface. The connection" between the part frames Jilla; 10b-may be obtained bythe' channels of corresponding metal sections being compressed against the intermediate packing, forinstance by rolling along the sections for the-whole length thereoforbypressing the material inwardly" at certain points'separated from each other. This may be effected by mechanical means, the frame members 10a, 10'b thenforming an integral'frame-of the sameshape as theframe member 10 in Figs. 1 and 5. frame member-forming' a lintel ofthe frame is constructed in' a corresponding' mannerin the form: of two mem-- Although the invention is shown in the drawing as' being applied to windows having two; panes-j inside one another, the invention is not limited to this constructions...

but may also be utilized with three panes. Otherwise, the invention also is not restricted to the embodiments showtr diagrammatically in the drawing; these embodi mentsonly-representing simplified examples.

What I claim-is:

1-. A sash-frame forwindows comprising a framemember extending; along a wholesideof the-window and.

two further sides thereof while forming round: cornersin the -transitions between said sides, said frame member:

Obviously; the' straight further having channels for holding three edges of each of two spaeedwindow panes; a straight frame member having corresponding channels for said panes and extending along the fourth side of the window and means to connect said straight frame member removably with the first-mentioned frame member, the straight frame memher being formed as a holder for a screening means to be inserted between: the window panes.

2. A sash-frame for windows comprising a sectioned metallic frame member extending along a whole side of the window and along substantially the whole length of two further.- opposite. sides thereof while being bent to form round corners in the transitions between said sides, said frame member further being formed with channels for tightly holding three. edges of. each. of two parallel spaced window panes, a straight sectioned metallic frame member having corresponding channels for said panes and extending along the fourth side of. the. window, means to removabl'y connect said frame members at the ends thereof, said straight frame member comprising. operatr ingmeans, mounted; to permit operation of a screening. member intended to beinserted" into the space between the window panes.

3. A sash frame for windows comprisingan outer. me: tallic. frame member extendingalong a whole side of the window'a'nd" along two further sides thereof'while forming round corners. in the transitions. between said sides, an inner metallic frame member extending parallel with said outer frame member, each ofsaid frame members having achannel for three edges of a window pane, cold insulating means between said. outer, andv inner framev members, and a further straight metallic frame memher: removably connectedwith the firstmentionedfiiame 111C111: bers and comprising an outer part and aninner part. and heat insulating means between said' parts, said straight. metallic frame member having corresponding channels for said panes and being formed. as a holder for. screening meansxto be inserted between the window panes.

4'..A sash frame for windows comprising a sectioned metallic frame member extending along a whole. side of the window and two further sid'es thereof whileforming. round corners in the transitions between said sides: said frame member further being formed with a web and channelled'edge portions for receiving two parall'el'spaced panes and a flange extending outward from the web. in. a plane. parallel with those of said panes, a straight frame member. having corresponding channels for said panes. andlextending along the fourth side of the window, and". means'to connect saidlstraight frame member. removably with the. first-mentioned'frame member;.the straight. ffame. member forming,a hoId'erfor. a screening. means to. be. inserted between the panes.

References Cited in the file ofthis' patent UNITED STATES. PATENTS 1,407,549 Lancaster Feb. 21", 1922 1,621,332; Mills- Mar: 1 5, 1927 2,169,713.: Stroudt Aug. 15, 1939 2,499,478; Feser Mar. 7, 1950 2,526,752? Horstman'et al; 0ct; 24 1 9 50 2,5;45y90f7 Watkins: Mar. 20, 1951 2,557,978; Krumnt. June-26', 1951 FOREIGN PATENTS 365,695. Germany u Jan. 8, 1921- 

